meanly vs unrelentingly

meanly

adv
  • In a mean manner; ill-willed, nastily. 

  • Poorly or inadequately. 

  • Humbly, of or from low social status; basely. 

unrelentingly

adv
  • In an unrelenting manner; rigidly; cruelly. 

How often have the words meanly and unrelentingly occurred in a corpus of books? (source: Google Ngram Viewer )